Results 11 to 20 of about 4,191,932 (286)

DELINEATION OF HYDROCARBON SATURATED RESERVOIR SAND USING INTEGRATED 3D PRE-STACK SEISMIC AND WELL LOG DATA IN BONGA – FIELD, CENTRAL SWAMP DEPOBELT, ONSHORE NIGER DELTA, NIGERIA [PDF]

open access: yesMalaysian Journal of Geosciences, 2021
This study has successfully delineated the lateral continuity of hydrocarbon saturated sand reservoir in Bonga field, Niger Delta. 3D pre-stack seismic volume and well logs from two (2) exploratory wells were employed in the pre-stack seismic inversion ...
Innocent Kiani, Aniefiok Sylvester Akpan
doaj   +1 more source

Conformational preferences of fluorine-containing agrochemicals and their implications for lipophilicity prediction

open access: yesBeilstein Journal of Organic Chemistry, 2020
Molecular polarity governs lipophilicity, which in turn determines important agrochemical and environmental properties, such as soil sorption and bioconcentration of organic compounds.
Daniela Rodrigues Silva   +2 more
doaj   +1 more source

Time-dilation, Log N-Log P, and cosmology

open access: yesAIP Conference Proceedings, 1996
5 pages in LATeX, REVTEX style, 2 embedded figures.
Nemiroff, R. J.   +3 more
openaire   +2 more sources

The $p$-Center Problem in Tree Networks Revisited [PDF]

open access: yes, 2016
We present two improved algorithms for weighted discrete $p$-center problem for tree networks with $n$ vertices. One of our proposed algorithms runs in $O(n \log n + p \log^2 n \log(n/p))$ time.
Banik, Aritra   +4 more
core   +2 more sources

Examination of lipophilicity and toxicity of azo dyes derivatives

open access: yesZaštita Materijala, 2017
Azo dyes, in addition to showing a wide range of applications in various industries, after releasing into aquatic ecosystems can act as pollutants. The first step in the prediction of possible toxic effects of compounds in the environment includes the ...
Suzana Apostolov   +3 more
doaj   +1 more source

Non-Rectangular Convolutions and (Sub-)Cadences with Three Elements [PDF]

open access: yes, 2019
The discrete acyclic convolution computes the 2n-1 sums sum_{i+j=k; (i,j) in [0,1,2,...,n-1]^2} (a_i b_j) in O(n log n) time. By using suitable offsets and setting some of the variables to zero, this method provides a tool to calculate all non-zero sums ...
Funakoshi, Mitsuru, Pape-Lange, Julian
core   +2 more sources

Generalised Pattern Matching Revisited [PDF]

open access: yes, 2020
In the problem of Generalised Pattern Matching (GPM) [STOC'94, Muthukrishnan and Palem], we are given a text T of length n over an alphabet Σ_T, a pattern P of length m over an alphabet Σ_P, and a matching relationship ⊆ Σ_T × Σ_P, and must return all ...
Dudek, Bartłomiej   +2 more
core   +2 more sources

Serum and aqueous humor adiponectin levels correlate with diabetic retinopathy development and progression

open access: yesPLoS ONE, 2021
Purpose To compare adiponectin (APN) levels in the serum and aqueous humor (AH) and evaluate their association with the development/progression of diabetic retinopathy (DR).
Hyun Seung Yang   +8 more
doaj   +2 more sources

Studies on Log Po/w of Quinoxaline di-N-Oxides: A Comparison of RP-HPLC Experimental and Predictive Approaches

open access: yesMolecules, 2011
As reported in our previous papers, a series of quinoxaline-2-carboxamide 1,4-di-N-oxide derivatives were synthesized and studied as anti-tuberculosis agents. Here, the capability of the shake-flask method was studied and the retention time (expressed as
James A. Platts   +7 more
doaj   +1 more source

On the Power of Adaptivity in Sparse Recovery [PDF]

open access: yes, 2011
The goal of (stable) sparse recovery is to recover a $k$-sparse approximation $x*$ of a vector $x$ from linear measurements of $x$. Specifically, the goal is to recover $x*$ such that ||x-x*||_p
Indyk, Piotr   +2 more
core   +4 more sources

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